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ASM Handbook

Fundamentals of Modeling for Metals Processing

Edited by
D.U. Furrer
D.U. Furrer
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S.L. Semiatin
S.L. Semiatin
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ASM International
Volume
22A
ISBN electronic:
978-1-62708-196-2
Publication date:
2009
Book Chapter

Diffusivity and Mobility Data

By
Carelyn E. Campbell
Carelyn E. Campbell
National Institute of Standards and Technology
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Published:
2009
Page range:
171 - 181
Publication history
July 11, 2009

Abstract

Diffusion is the process by which molecules, atoms, ions, point defects, or other particle types migrate from a region of higher concentration to one of lower concentration. This article focuses on the diffusivity data and modeling of lattice diffusion in solid-state materials, presenting their diffusion equations. It discusses different methods for evaluating the diffusivity of a material, including the measurement of diffusion coefficients, composition profiles, and layer growth widths. The article reviews the various types of direct and indirect diffusion experiments to extract tracer, intrinsic, and chemical diffusivities. It provides information on the applications of single-phase and multiphase diffusion.

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Carelyn E. Campbell, 2009. "Diffusivity and Mobility Data", Fundamentals of Modeling for Metals Processing, D.U. Furrer, S.L. Semiatin

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